GNOME 44 multi-monitor screen freeze when resuming from sleep

[Daniel van Vugt]

[ Impact ]

Using multiple monitors in a Wayland session, one or both may freeze when resuming from sleep.

[ Test Plan ]

1. Log into a Wayland session.
2. Set up gnome-shell to span two monitors.
3. Wait for the monitors to sleep.
4. Wiggle the mouse to wake them.
5. Move the mouse between both monitors.
6. Verify that the mouse appears on both monitors and neither are frozen.

[ Where problems could occur ]

This fix affects frame scheduling so problems could always occur in the form of other screen freezes and frame rate issues.

[ Original report ]

Testing GNOME 44 I find it can't resume from sleep properly if two monitors are plugged in. Both monitors wake up, but one is completely frozen and the other is partially frozen (stops responding to anything but cursor movement).

Using Intel graphics with two USB-C monitors.

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 44.1-1ubuntu1

---------------
mutter (44.1-1ubuntu1) mantic; urgency=medium

  * Merge with Debian (LP: #2020225, LP: #2012100, LP: #2012717,
    LP: #2013216, LP: #2019225, LP: #2006044, LP: #2015861, LP: #1999578,
    LP: #2011251, LP: #2016308)
  * Remaining changes:
    - Add x11-Add-support-for-fractional-scaling-using-Randr.patch
    - Add window-Add-ability-to-override-the-edge-constraints.patch
      + Make possible for extensions (such as Tiling Assistant) to override
        window constraints. (LP: #2007710, #2011611)

mutter (44.1-1) experimental; urgency=medium

  [ Jeremy Bícha ]
  * New upstream release
  * Drop bash patch applied in new release
  * debian/libmutter-12-0.symbols: Add new symbols

  [ Daniel van Vugt ]
  * Update triple buffering patch for Mutter 44.1

  [ Marco Trevisan (Treviño) ]
  * Fix issue with Firefox opening black window in wayland sessions
    - Add d/p/display-Set-compositor-selection-earlier-on-XWayland.patch
      (LP: #1987976)

 -- Jeremy Bícha <email address hidden> Fri, 19 May 2023 16:24:49 -0400

[Chris Halse Rogers (raof)]

Hello Daniel, or anyone else affected,

Accepted mutter into lunar-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/mutter/44.1-0ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-lunar to verification-done-lunar. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-lunar. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Daniel van Vugt (vanvugt)]

Verified fixed on lunar in mutter 44.1-0ubuntu1

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 44.1-0ubuntu1

---------------
mutter (44.1-0ubuntu1) lunar; urgency=medium

  [ Jeremy Bícha ]
  * New upstream release (LP: #2020225, LP: #2012717, LP: #2013216,
    LP: #2015861, LP: #2017097)
  * debian/libmutter-12-0.symbols: Add new symbols
  * Drop 3 patches applied in new release

  [ Daniel van Vugt ]
  * Update triple buffering patch for Mutter 44.1 (LP: #2017137)

 -- Jeremy Bícha <email address hidden> Fri, 19 May 2023 16:18:13 -0400

[Robie Basak (racb)]

The verification of the Stable Release Update for mutter has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.